#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
struct A {
	int _a : 2;
	int _b : 5;
	int _c : 30;
	int _d : 10;
};

int main()
{
	struct A a = { 0 };
	a._a = 1;
	a._b = 2;
	a._c = 3;
	a._d = 4;
	printf("%d", sizeof(struct A));
	return 0;
}